Primer for gas engines



Nov. 14, 1933;

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A. A R. PARKER 1,934,8 78

PRIMER FOR GAS ENGINES Filed March 8, 1933 2 Sheets-Sheet 1v f //W//II l @S f Z 6 .5.9 J5 JJ (7' I4..

@www MW WAM A. LA R. PARKER 1,934,878

PRIMER FOR GAS ENGINES Filed March 8, 1935 2 Sheets-Sheet 2 f o 2 3 J6 4 m V d? /7/ J/ UL H @1HE I A. Z

Nov. 14, 1933.l

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Patented Nov. 14, 1933 UNITED STATES` PATENT orf-lcs 16 Claims.

The invention relates to new anduseful improvements in a device for dispensing iiuidto one or more selected points, which device is particularly adapted for operation as a primer for a gas engine.

An object of the invention is to provide a iluid dispensing device wherein the operating member for dispensing theviluid may also be used for setting a distributing valve so that the fluid supply may be cut oil from .the dispensing means or said valve set for directing the fluid to a selected place.

A further object of the invention is to provide a fluid dispensing device of the above type with a distributing valve so constructed that the iiuid may be dispensed to a selected one of a plurality of places.

These and other objects will in part be obvious and will in part be hereinafter more fully disclosed.

In the drawings which show by way of illus,- tration one embodiment of the invention:

Figure 1 is a vertical sectional view through a uid distributing pump embodying my invention;

Fig. 2 is a view partly insection and partly in perspective showing the piston head and the manner of connecting the same to the distributing valve;

Fig. 3 is a sectional view on the line 3-3 of Fig. 1;

Fig. 4 is a sectional view on the line 4-4 of Fig. 1; f

Fig. 5 is a view similar to Fig. 4, but showing a slightly modified arrangement of pump head and distributing valve sothat the duid may be distributed to one or the other oftwo independent places of use; v

Fig. 6 is a view similar t0 Fig. 4 showing a further modified form 'oi' pump head and distributing .valve for distributing uid to .one of three selected places of use;

Fig. 'I is a vertical sectional view through the lower end ofthe pump showing the piston head as partly retracted and the valve at the inlet port unseated so that the iluid will flow into the pump casing;

Fig. 8 is a diagrammatic view showing the ,distributing pump asconnected with a gas engine -for supplying fuel thereto 'for starting, and

Fig. 9 is a vertical sectional view through the lower end of the pump casing, and showing a slightly modified form of construction.

The invention is directed broadly to a fluid dispensing device which includes a pump barrel or casing in which a piston is mounted for manual reciprocation. This pump may be utilized for drawing fluid from a source of supply and for delivering the same to a selected place. To this end there are ports leading into the casing at the outer end thereof, which ports are controlled by a valve which is so constructed that when in one set position the port leading to the uid supply is cut oi, while said valve when placed in another set position opens the portto the iiuid supply and connects 'the dispensing device with the pipe leading to the place where it is desired to dispense the iiuid.

Associated with the inlet and outlet ports of the dispensing device are check valves of the usual construction so that the piston may draw in uid on its out stroke and dispense iuid on its compression or in stroke. 'I'he distributing valve is in line with the piston but is disconnected. therefrom except when the piston is at the end of its compression stroke. There is a stem on the valve which engages a recess in the piston head and the stem and recess are so shaped that a rotating movement of the piston head will turn the valve. The casing is provided with a groove and the piston head has a lug which runs in the groove during reciprocation of the piston. 'Ihe casing is formed with a recess adjacent the distributing valve and thelug moves out of the groove into this recess when the piston is at the end o1' its compression stroke. This permits a rotation of the piston at this time for the purpose of turning the valve to different set positions. There is a recess in the casing adapted to receive the lug on the piston head, when the piston head is in engagement with the stem on the distributing valve so as to lock the distributing valve in its closed position. When the va1ve is in open position for distributing, then the lug of course is moved out of the recess and brought into alignment with the groove in the casing so that the piston may be reciprocated. There is a spring associated with the piston which comes into play when the piston is at the end of its compression stroke and which operates to yieldingly hold the lug in the locking recess. y

It is thought the invention will be better understood by a detail description ot the illustrated embodiment thereof. The dispensing device consista of a pump barrel or casing 1 which is provided with a ilange 2 which is preferably formed integral therewith. This flange may be used for mounting the pump on the cowling of an airship, or in. any other suitable place where the device is tobe used. Othermeansmaybeusedforrigidly attaching the casing to some part associated with the devices to which the fluid is to be distributed.

The casing is provided with a valve housing 3, which may be detachably connected to the casing or formed integral therewith. This housing is provided with a pipe connection 4, to which the coupling sleeve 5 is attached. The coupling sleeve 5 is provided with a port 6, associated with which is a check valve 7 held seated for closing the port 6 by a spring 8. This coupling 5 is attached to a pipe line leading to the supply of fluid which is to be dispensed and the purpose of the check valve is to prevent the return of the fluid to the source of the supply on the compression stroke of the piston. There is a pipe 9 extending from the housing 3 which is connected through suitable tubing to the place where the fluid is to be delivered.

Located in the housing 3 is a distributing valve 10, which is provided with a port 1l leading to a chamber 12 within the valve. There is a. port 13 leading from this chamber 12 to the pump casing. A check valve 14 engages a seat at the inner end of the port 13 and the spring 15 normally holds the valve seated. This distributing valve is also provided with a port 16, which may be brought into register with the channel 17 leading into the chamber in the pipe connection 4.

Mounted for reciprocation in the pump casing 1 is a piston 18 consisting of a sleeve portion 19 which surrounds a central stem or rod to which the piston head 20 is attached. The piston head and sleeve have a sliding fit with the casing and dispense the fluid by displacement. The piston head is connected to the rod by a pin 21. Attached to the outer end of the piston rod ls a head 23 secured thereto by a pin 24 and attached lto this head is a handle 22. The handle is secured to the head by a screw 25. The handle is shown as T-shaped. It will be understood, of course, that it may be otherwise shaped and the present form is purely for illustrative purposes.l

Any suitable means may be provided for a stem packing, but as shown, I have provided a washer 26 adapted to be placed in a bored out recess formed in the pump casing, at the upper end thereof. This washer engages a seat at the lower end of the recess. Directly above the washer is a packing 2'7 and above the packing is a ring mem-- ber 28. A sleeve 29 surrounds the upper end of the casing and bears against' this ring member 28. The sleeve has a threaded connection with the casing, and when it is turned onto the casing, it will engage the ring member 28 and compress the packing, thus making a very tight joint between the sleeve 19 moving with the piston head and the inner end of the casing. The lower edge of this sleeve-29 is provided with a series of V- shaped notches. Attached to the casing is a leaf spring 30 which is provided with a linger 31 adapted to engage one of these V-shaped notches, the purpose of which is to prevent the nut or sleeve from Working loose, due to the vibrations of the parts to which the dispensing device is attached. It will be understood, of course, that any suitable means may be provided as a yielding lock for holding the parts in assembled position and for preventing the loosening of the same.

The sleeve has an extension 32 which extends up into the handle as the piston completes its delivery stroke. There is a spring 33 in the handle bearing against the end of the sleeve and which normally holds the piston head a slight distance away from the housing 3 when the device is not in operation.

The distributing valve 10 is provided with a stem 34 of irregular cross section. The port 13 extends up through the stem. The piston head has a recess 35 in\the end thereof similar in shape to this stem 34. The operator by pressing on the handle may force the piston head down on to the stud, and thus connect the piston to the stud so that the rotation of the piston will rotate the distributing valve 10.

The piston head has a laterally projecting lug 36 which slides freely in a channel or groove 37 in the wall of the casing. The casing is cored at the lower end thereof so as to provide a recess 38. The groove or channel 37 terminates at the upper side of this recess, so that the lug will move out of the groove or channel in the recess. The channel otherwise extends the full length of the casing so that the piston may be reciprocated. If the distributing valve is set as shown in Figures 1, 4 and 7, luid may be drawn in past the check valve 7 from the connection to .the supply and the casing lled with the uid to the extent that the piston is withdrawn. The piston is then moved forward on its compression stroke and the fluid will be forced by the check valve' 14 and be dispensed through the pipe connection 9 to the place where it is to be used.

When the dispensing device is not inuse, it

solas to close the port 17 leading t'o the supply.

This may be said to be the off position of the valve.

There is a recess 4l in the casing which extends a short distance upward from the recess 38. Associated with this recess is a stop shoulder 40. When the valve is in oi position, the lug 36 is brought into contact with this shoulder 40, and when the pistonis released the lug will be raised into the recess 41 and thus lock the valve in its off position. To release the valve, the operator pressed on the handle, moves the lug out of the recess,and then turns the piston until the lug contacts with the stop shoulder 40. This will align the lug 36 with the channel or 'groove 37, so that the piston may be retracted and reciprocated for dispensing fluid. This positioning of the lug against the shoulder 40 turns the distributing valve 10 so as to bring the port 16 into alignment with the port 17, and thus connecting the casing with the supply. The check valveA 14 is spring-pressed to a seated position so as to cause the piston on its upward stroke to draw the fuel from the supply. The spring seating this valve may be made of sufficient tension so that the valve will be held seated against any suction pull by the engine to which the distributing device is connected, and the drawing of fuel through the distributing valve into the engine is thus avoided.

In the construction shown in Fig. 5, thepump is designed so as to dispense fluid to more than one, place for use selectively. In order that this'may be accomplished, there is another pipe connection leading from the housing 3, and the casing is provided with a second channel 3'7a similar to At this j the channel 37, The distributing valve is provided with another port 16 which may be brought into alignment with the channel 17. Between the two channels 37 and 37Et is the locking recess 4l for holding the distributing valve in its closed position. The operation of this form of construction is thought to be obvious. The operator again connects the pump piston to the distributing valve, and by turning said piston, the valve will be positioned so that there is a connection made in the proper pipe leading to the place selected for use.

As shown in Fig. 6, there are three dispensing pipes 9, 9 and 9b leading from the housing and there is a third channel 37b, and two locking recesses 41 and 41a located, respectively, between the channels 37, 37a and 37, 37b. There is no intermediate shoulder in this form of the invention, but there is the shoulder 39 aligning the lug with the channel 37. and the shoulder 40 which aligns the lug with the channel 37b. Y

My improved fluid dispensing device is particularly designed for the priming of an engine cylinder or a plurality of engine cylinders. In Fig.

'8 of the drawings, the dispensing device is indicated at D. The engine and the cylinders thereof are indicated at E. The dispensing device is connected through a pipe 42 to a fuel line 43. .The dispensing device is also connected through a pipe 44 to a distributing head 45 from which pipes 46, 47 and 48 lead to three selected cylinders of e engine. The cylinders selected are the ones which should properly receive the charge for starting. The pipes are connected with a spray head for spraying the fuel into the cylinder.

The fuel distributing pipe may be used in connection with two engines when the pump housing and distributing valve are constructed as shown in Fig. 5, and it may be used with three engines when the pump housing and distributing valve are constructed as shown in Fig. 6.

In Fig. 8 of the drawings, there is a pipe 57 which is connected with the dispensing pipe 9b and this pipe 57 will be connected to a distributor similar to the distributor associated with the engine which is to be charged with fuel for starting. There isa pipe 58 which is .connected v'ith the pipe extension 9a, and this also is in turn connected to a suitable distributor similar to the distributor 45 and associated with a third engine. It will be apparent that by setting the distributing valve so that the ports thereof are properly connected to the inlet port, any one of these three engines may be charged with fuel for starting. The pump may be quickly connected to one engine and a charge delivered thereto, and then by a slight rotation of the pump piston, when at the inner'end of its movement, the distributing valve will be set so that the pump is connected to another engine, and it may be charged. When the distributing pump is out of use, it may be disconnected from the supply,`so that there will be no possible leakage therethrough incident to the suction strokes of the engines.

While the spring 15,` controlling the check valve 14, may be of sulcient tension to prevent the engine on its suction stroke drawing fuel through the dispensing pump lfrom the supply, I have shown in Fig. 9 a means for positively yholding the valve seated against any possible suction pull of the engine. The ball is held against its seat by a spring 15 similar to that described above. This spring 15 rests against an abutment plate 49. The pump head 3 has an extension 50 at the lower side thereof in which is 1ocated the piston 5l. There is an opening 52 leading through the end wall of this extension so that the space beneath the piston communicates with the atmosphere through this opening. A rod 53 is attached to this piston 51. This rod extends up through the abutment plate 49 and terminates at a short distance beneath the ball 14 when the piston is in its lowered position. There is a cork disk 54 on which the piston rests. The abutment plate 55 rests on a shoulder at the lower end of the valve housing and this plate has an opening therethrough which freely engages the rod 53. Thereare also openings 55a through this plate so that the suction pull of the engine will be applied to the chamber directly above the piston 51. This suction pull of the engine creates a vacuum within the housing and the atmospheric pressure against the corkvdisk will lift the piston 51 and raise the rod 53, pressing the same against the ball 14 so as to hold the ball seated. This provides a positive means whereby the suction of the engine, instead of unseating the valve 14, will force the valve tightly against its seat and-thus prevent stealing fuel from the supply. This also enables a lighter spring to be used for normally holding the check valve 14 closed and against which the dispensing pressure operates. While the invention has been described-in particular as useful in the charging of an engine with a fuel, it will be understood that from certain aspects thereof, it may be used for dispensing fluid of any kind to a place where it is to be used. .The device is simple in construction, hand-operated, and may be selectively utilized with little or no effort for dispensing a fluid to one or another selected place when desired. The distributing Avalve may be so constructed that a fluid may be forcibly dispensed to, a desired sourceand then the fluid or pressure reliev'ed I through the distributing valve. It is understood the term fluid is used in a broad sense.

It is obvious, therefore, that the invention is not restricted to the use described, neither is it restricted to the details of construction used for illustrating an embodiment of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is: y t

1. A liquid dispensing device comprising a pump having a reciprocating piston, a distributing valve associated with said pump for control ling the distribution of fluid by the pump, means whereby said piston when at the end of its compression stroke may be connected to said valve so that a rotating movement of the .piston will shift said distributing valve to different set posi'- tions. a

2. A, liquid dispensing device comprising a pump having a reciprocating piston, a distributing valve associated with said pump for controlling the distribution of fluid bythe pump, means whereby said piston when at the end of its compression stroke may be connected to said valve so that a rotating movement of the piston will shift said distributing valve to different set posi- .tions and yielding means for locking the piston ling the distribution of fluid by the pump, means whereby said piston when at the end of its compression stroke may be connected to said valve so that a rotating movement of the piston will shift said distributing valve to diierent set positions, said means for connecting the piston to the valve including a stem irregular in cross section, adapted to engage a recess of similar cross section and means carried by the piston and cooperating with said casing for preventing rotation of the valve when the piston head is disconnected from the distributing valve whereby said stem and recess are held in proper relation for engagement.

4.- A liquid dispensing device comprising a pump having a reciprocating piston, a distributing valve associated with said pump for controlling the distribution of fluid by the pump, means whereby said piston when at the end of its compression stroke may be connected to said valve so that a rotating movement of the piston will shift said distributing valve to different set positions, said means for connecting the piston to the valve including a stem irregular in cross section, adapted to engage a recess of similar cross section, means carried by the piston and cooperating with said casing for preventing rotation of the valve when the piston head is disconnected from the distributing valve whereby said stem and recess are held in proper relation for engagement and means for yieldingly locking the piston against rotation when the distributing valve is set in closed position.

5. A liquid dispensing device comprising a pump casing,` a piston, means for manually operating said piston, said pump casing having a housing with inlet and outlet ports, check valves controlling said ports, a distributing valve located in said housing for closing said inlet port, said piston and said casing having a cooperating lug and channel connection for preventing rotation of the piston while the lug is in the channel, said channel terminating in a recess adjacent the casing housing so as to permit the piston to be rotated when at the end of its compression stroke, said distributing valve having a projecting stud adapted to engage a recess in the piston, said stud and recess being shaped so that a turning movement of the piston will turn the distributing valve, a stop shoulder for limiting the rotating movement of the distributing valve when in closed position, said casing having a recess adapted to receive the lug when placed against the stop shoulder, and a spring for yieldingly moving the piston so as to seat the lug in the recess.

6. A liquid dispensing device comprising a pump casing, a piston, means for manually operating said piston, said pump casing having a housing provided with an inlet port and a plurality of outlet ports, check valves controlling said ports, a distributing valve located in said housing for closing the inlet port, and having ports therein adapted to be selectively positioned for connecting the inlet port with an outlet port, and means whereby said distributing valve may be moved to dierent set positions by a rotating movement of said piston.

7. A liquid dispensing device comprising a pump casing, a piston, means for manually operating said piston, said pump casing having a housing provided with an inlet port and a plurality of outlet ports, check valves controlling said ports, a distributing valve located in said housing for closing the inlet port, and having ports therein adapted to be selectively positioned for connecting the inlet port with an outlet port, and means whereby said distributing valve may be moved to diiierent set positions by a rotating movement of said piston, said piston having a lug movable therewith and said pump casing having a channel associated with each outlet port, and a recess adjacent the housing into which said channels open whereby the lug may be moved from the channels into the recess for the setting of the distributing valve, said channels being so positioned as to receive the lug and permit the reciprocation of the piston when the distributing valve is set in register with a selected outlet port.

8. A liquid dispensing device comprising a pump casing, a piston, means for manually operating said piston, said pump casing having a housing provided with an inlet port and a plurality of outlet ports, check valves controlling said ports, a distributing valve located in said housing for closing the inlet port and having: ports therein adapted to be selectively positioned for connecting the inlet port with an outlet'port, means whereby saidr distributing valve may be moved to diierent set positions by a rotating movement of said piston, said piston having a lug movable therewith and said pump casing having a channel associated with each outlet port, a recess adjacent the housing into which said channels open whereby the lug may be moved from the channels into the recess for the setting of the distributing valve, said channels being so positioned as to receive the lug and permit the reciprocation of the piston when the distributing valve is set in register with a selected outlet port, said pump casing having a recess to receive the lug for locking the piston in a set position when the distributing valve is in closed position. and a spring operating on said piston for yieldingly holding the lug in the recess.

9. A liquid dispensing device comprising a pump casing, a piston, means for manually operating said piston, said pump casing having a housing provided with an inlet port and a plurality of outlet ports, check valves controlling said ports, a distributing valve located in said housing for closing the inlet port, and having 120 ports therein adapted to be selectively positioned for connecting the inlet port with an outlet port, said distributing valve having a projecting stud, said piston having a recess adapted to receive said stud when the piston is at the end of its compression stroke, said stud and recess being shaped so that the piston when in engagement with the stud may be turned for rotating the distributing valve, means whereby said piston and distributing valve maybe locked in a set position with 13* the inlet port closed, and means whereby said piston is prevented from rotating when separated from said stud.

10. A liquid dispensing device comprising a pump casing, a piston, means for manually op- 35 erating said piston, said pump casing having a housing provided with an inlet port and a plurality of outlet ports, check valves controlling said ports, a distributing valve located in said housing for closing the inlet port and having ports therein adapted to be selectively positioned for connecting the inlet port with an outlet port, said distributing valve having a projecting stud, said piston having a recess adapted to receive said stud when the piston is at the end of its compression stroke, said stud and recess being shaped so that-the piston when in engagement with the stud may be turned for rotating the distributing valve, means whereby said piston and distributing valve may be locked in a set position lull with the inlet port closed, means whereby said piston is prevented trornrotating when separated from said stud, and a spring means operating only when said piston lis at the inner end of its stroke and operating yieldingly to hold the piston in locked position with the distributing valve closed. l

11. A liquid dispensing device comprising a pump casing, a piston, means for manually operating said piston, said pump casing having a housing with an inlet port and a plurality of outlet ports, a distributing valve located in the housing and operating to connect the pump casing with any of said outlet ports, a valve controlling said connection and disposed so as to cause the piston when moved outwardly to draw liquid through the inlet port, a spring for seating said valve, means controlled by the suction on the outlet port for positively. seating said valve so as 4to prevent the drawing'of the liquid past the valve through the.

suction pull on the outlet port, and means where- -bysaid piston operating means may be utilized for turning the distributing Vvalve to dierent set positions.

12. A liquid dispensing device comprising a pump casing, a piston, means for manually operating said piston, said pumpC casing having a housing with an inlet and an outlet port, a transmitting port connecting the outlet port with the pump casing. a valve adapted to close said transg mitting port, a spring. operating on said valve for holding said valve closed so that the piston on its outer stroke may draw liquid through the inlet port and on its inner stroke may discharge said liquid through the valve to the outlet port, and means controlled by the suction pull on the outlet portior forcing said valve against its seat so as to prevent the runseating thereof by the suction on the outlet port, and alpassing of the liquid from the supply through the pump by said suction pull.

13. A liquidv dispensing device comprising a housing having an inlet port to which a supply pipe is connected and an outlet port to which a dispensing pipe is connected, a pump having connection to said housing for drawing liquid from the'` supplyl pipe and for delivering the same through the dispensing pipe, a valve between the pump and the dispensing pipe, and means operating automatically on said valve for preventing liquid frombeing drawn irom the supply pipe through the housing into" the dispensing pipe through a suction pull on lthe dispensing pipe when said pump is idle.

14. A liquid dispensing device comprising a housing having an inlet portlto which a supply pipe is connected and an outlet port to which a dispensing pipe is connected, a pump having connection to said housing for drawing liquid from the supply pipe and for delivering the same through the dispensing pipe, a valve between the pump and the dispensing pipe, and a suctionally operated means operating automatically on said valve for preventing liquid from being drawn from the supply pipe through the housing into the dispensing pipe through a suction pull on the dispensing pipe when said pump is idle.

15. A liquid dispensing device comprising a housing having an inlet port to which a supply pipe is connected and outlet ports to which dispensing pipes are connected, a distributing valve located within the housing, a pump lhaving connection to the housing for drawing liquid fromlOO the supply pipe and for delivering the same through the distributing valve to a selected dispensing pipe, and a spring-closed check Valve located in said distributing rvalve and disposed so as to seat on a suction stroke of the pump.

16. A liquid dispensing device comprising a 'housing having an inlet port to which a supply pipe is connected and outlet ports to which dispensing pipes are connected, a distributing valve locatedwithin the. housing, a pump having connection to the housing `for drawing liquid fromv the supply pipe and for delivering the same through the distributing valve to a selected clispensing pipe, Aa spring-closed check valve located in said distributing valve and disposed so'as to seat 115 on a suction stroke of thepump, and means operated by a suction pull on the dispensing pipe for forcing said check valve to seated position when the pump is idle for preventing liquid being drawn from the supply pipe through the housing into the dispensing pipe by saidsuction pull.

` ARTHUR. LA RUE PARKER. 

